This indicator will illuminate when the front fog lights are on.
See also:
Diesel engines
If the outside temperature is very low, the diesel thickens due to the formation
of paraffins and could clog the diesel fuel filter.
In order to avoid these problems, different types of diesel are ...
Diesel fuel filter sensor failure
The warning light on the dial comes on (on certain versions together with the
message on the display) when dieel fuel filter sensor failure is detected. Contact
Fiat Dealership as soon as poss ...
With toggle lens
Press the short side of the lens fig.
91 to switch the light on and off.
...